Machine for grinding valves on their seats



2 Sheets-Sheet 1.

(N0 Model.) I I E. U. SCOVILLE.

MACHINE FOR GRINDING VALVES ON THEIR SEATS. No. 412.423.

Patented Oct. 8, 1889.

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2 Sheets-Sheet 2.

Patented 0on8, 18 89.

E; U. SOOVILLE. MACHINE FOR GRINDING VALVES ON THEIR SEATS.

(No Model.) 1

UNITED STATES.

PATENT OFFICE.

ELIJAH U. SOOVILLE, OF MANLIUS, NEWV YORK.

MACHINE FOR GRINDING VALVES ON THEIR SEATS.

SPECIFICATION forming part of Letters Patent No. 412,423, dated October 8, 1889.

Application filed July 31, 1888. Serial No. 281,604. (No model.)

To all whom, it may concern:

Be it known that I, ELIJAH U. SoovILLE, of Manlius, in the county of Onondaga, in the State of New York, have invented new and useful Improvements in Machines for Grinding Valves on Their Seats, of which the following, takenv in connection with the accompanying drawings, is a full, clear, and exact description.

This invention has reference to machines for grinding curved valves on correspondingly-curved seats, and is a specific improvement of the machine for which I and 0. Owen have obtained Letters Patent of the United States No. 347,130, dated May 10, 1886, my. present invention being designed more especially for fitting or grinding the valves on large faucets of the class described in the Letters Patent No. 301,759, dated July 8, 1884.; and it consists, chiefly, in the combination, with the stationary valve-seat holders v arranged in a row, of an oscillatory head extended lengthwise over said row, a slide mounted on said head and arranged to reciprocate lengthwise thereof, and valve-carriers connected to said slide; and the invention also consists in certain novel auxiliary devices connected with themachine, all as hereinafter fully described, and specifically set forth in the claims.

In the annexed drawings, Figures 1 and 2 are elevations of opposite sides of the machine. Fig. 3 is a top plan View of the same. Fig. 4 is an end elevation. Fig. 5 is a detached plan view of the reciprocating slide and block by which reciprocating motion is transmitted to the slide to which the valvecarriers are connected. Fig. 6 is a vertical transverse section on line a: m, Fig. 5. Fig. 7 is an enlarged vertical transverse section on line 'y y, Fig. 3; and Fig. 8 is a detail View of one of the valve-carriers.

Similar letters of reference indicate corresponding parts. 4

F represents the supporting-frame of the machine, said frame being of the form of a stout table'supported on rigid legs. To opposite ends of the said table are rigidly secured the faucet-holders or valve-seat holders, which are arranged in rows across the said ends of the table, and may be formed in any suitable manner, preferably of the form shown in the prior patent, No. 347,130, hereinbefore referred to, and consisting of arms R R and bars I I, bearing against opposite sides of the faucet fat diflerent points in the length thereof and clamping the faucet between them with the valve-seat thereof upward. Over each row of said valve-seats is extended an oscillatory head A, formed at opposite ends with arms A A, which are pivoted to the frame at points in line with the axial centers of the curved valve-seats of the faucets, so that the aforesaid head is caused to oscillate in an arc concentric with the curvatures of the valve-seats. Said oscillatory head receives motion from a crank-wheel L, mounted on a shaft d, arranged across the central portion of the table F and journaled in suitable pedestals or pillow-blocks secured to the top of the table.

A pitman D connects the wrist-pin of the aforesaid crank-wheel with one of the oscillatory heads A, and another rod D connects the two heads at opposite ends of the frame, so as to cause them topperate simultaneously. I

On the oscillatory head A is mounted a slide extending lengthwise thereof and movable longitudinally and guided by plates h h, secured to the head A at opposite edges of the slide. To this slide 0 are connected the valve-carriers, each of which I prefer to form of a stem 5, extending movably through the slide toward the face of the subjacent valveseat of the faucetf, and provided at its lower end with a head i and with a socket t in said head for the reception of the lug 1), which proj ects from the back of the valve '0 carried on the stem 8. A spiral spring 0 is interposed between the slide 0 and head of the stem 3 to force the latter toward the valve seat of the faucet. To the opposite end of the stem 3, which protrudes at the top of the slide 0, is pivoted an eccentric r, provided with a handle h, and by turning the said eccentric the aforesaid stem is drawn up to release the valve 12 when desired.

The aforesaid slide receives reciprocating motion by the following devices: Parallel with the shaft (1 is a counter-shaft d, which partakes motion therefrom by the engagement of gears 0 and 0 on the respective shaft-s. The gear wheel 0 of the countershaft has secured to it a wrist-pin u, to which is connected one end of the pitman D', the opposite end of which is connected to a slide I, mounted on a guide m, which is secured to the frame F at the pivoted end of one of the arms A of the oscillatory head A. This slide Z is provided with a diagonal slot Z, in which is seated, movably longitudinally a block a, and to the latter is pivoted an arm 0, the opposite end of which is secured to the slide 0.

In the operation of the described machine the. oscillatory head A moves the valves 0; 22

back and forth in an arc corresponding to the curvature of the valve-seat of the faucet f, and the reciprocating slide Z causes, by the sliding of the block a in the diagonal slot Z, the arm a to move toward and from the end of the oscillatory head A, and thereby imparts reciprocating motion to the slide 0, which carries the valves 1) 0 back and forth across the valve-seats and at right angles to the plane of oscillation of the head A. The drawing of the valve across the valve-seat in the aforesaid two directions causes the valve and its seat to be ground uniformly over the entire surfaces thereof and thus become properly fitted to each other.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In combination with the stationary valve seat holders arranged in a row, the oscillatory head A, extended lengthwise over said row, the slide 0, mounted on said head and arranged to reciprocate lengthwise thereof, and the valve-carriers connected to said slide, substantially as described and shown.

2. In combination with the stationary valveseat holders arranged in a row, the oscillatory head A, extended lengthwise over said row, the slide 0, mounted movably longitudinally on said head, the valve-carriers b b, connected to said slide, the block a, arranged movably in the direction of the length of the slide, and the arm 0, connecting the said block with the slide 0, substantially as described and shown.

3. In combination with the frame, cranks, or eccentrics, and pitmen D D, stationary valveseat holders connected to the frame, the oscillatory head A, connected to the pitman D, the slide 0, mounted on said head, the valvecarriers connected to said slide, the slide 1, connected to the pitman D and provided .with the diagonal slot 1', the block a, sliding longitudinally in said slot, and the arm 0, pivoted to said block and connected to the slide 0, substantially as described and shown.

4. In combination with slide 0 and the valve 4), provided with the lug o, the valve-carriers consisting of the stem .9, extending through the slide and provided at one end with the head i and socket t in said head, the eccentric 0', connected to the opposite end of the stem 8, and the spring e, interposed between the slide and head of the stem, substantially as described and shown.

In testimony whereof I have hereunto signed my named, in the presence of two witnesses, at Syracuse, in the county of Onondaga, in the State of New York, this 27th day of June, 1888. .7 V.

ELIJ AH U. SCOVILLE. s.] Witnesses:

JOHN J. LAAss, O. H. DUELL. 

